Now showing items 1-20 of 28

    • A flow formulation for the optimum communication spanning tree 

      Fernández Aréizaga, Elena; Luna Mota, Carlos; Hildenbrandt, Achim; Reinelt, Gerard; Wiesberg, Stefan (Universidad de La Laguna, 2013)
      Conference report
      Open Access
      In this paper we address the Optimum Communication Spanning Tree Problem. We present a formulation that uses three index variables and we propose several families of inequalities, which can be used to reinforce the ...
    • A new optimal electricity market bid model solved through perspective cuts 

      Corchero García, Cristina; Mijangos Fernández, Eugenio; Heredia, F.-Javier (Francisco Javier) (Springer, 2011-11)
      Article
      Restricted access - publisher's policy
      On current electricity markets the electrical utilities are faced with very sophisticated decision making problems under uncertainty. Moreover, when focusing in the short-term management, generation companies must include ...
    • A simulation framework for real-time assessment of dynamic ride sharing demand responsive transportation models 

      Linares Herreros, María Paz; Montero Mercadé, Lídia; Barceló Bugeda, Jaime; Carmona Bautista, Carlos (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Open Access
      Sustainable mobility is not only a technological question, automotive technology will be part of the solution combined with a paradigm shift from car ownership to vehicle usage, and the application of Information and ...
    • A surface mesh smoothing and untangling method independent of the CAD parameterization 

      Gargallo Peiró, Abel; Roca Navarro, Francisco Javier; Sarrate Ramos, Josep (2014-04-01)
      Article
      Open Access
      A method to optimize triangular and quadrilateral meshes on parameterized surfaces is proposed. The optimization procedure relocates the nodes on the surface to improve the quality (smooth) and ensures that the elements ...
    • Análisis de datos y clasificación del sector del autobús interurbano en Catalunya 

      Burgos Campos, Fèlix; Pérez Foguet, Agustí (Universidad da Coruña, 2008)
      Conference report
      Open Access
    • Application to the proximal point algorithm to the general traffic assignment problem 

      Codina Sancho, Esteve; Montero Mercadé, Lídia (Edicions de la Universitat de Lleida, 2003)
      Conference report
      Open Access
      An adaptation of the proximal algorithm for the traffic assignment problem under a user equilibrium formulation for a general asymmetric traffic network is presented in this paper, following the recently published results ...
    • Building optisim, optimizador NZEB 

      Fonseca Casas, Pau; Colls, Màxim; Casanovas Garcia, Josep; Fonseca Casas, Antoni; Garrido Soriano, Núria (2012)
      Conference report
      Open Access
      La simulación de la demanda energética de un edificio es una tarea compleja debido principalmente a dos factores clave. En primer lugar, es necesario definir la física y las complejas relaciones entre todos los elementos ...
    • Calibración de parámetros de modelización en el simulador de tráfico AIMSUN2 

      Izquierdo Vigil, Miguel Ángel; Moreno Magdaleno, José Antonio (Universitat Politècnica de Catalunya, 1999-05)
      Master thesis (pre-Bologna period)
      Open Access
      Estudiar la influencia de diversos parámetros, relacionados con los modelos de comportamiento de vehículos, en los resultados producidos por el simulador A1MSUN2.El proyecto constará de dos partes: · en la primera ...
    • Cifrado homomorfico de clave publica basado en Residuosidad Cuadratica 

      Herranz Sotoca, Javier; Sisternes, Juan Ramón (2012)
      Conference report
      Open Access
      Los esquemas de cifrado de clave p´ ublica con propiedades homom´orficas tienen muchas utilidades en aplicaciones reales. Entre los esquemas con propiedades homom´orficas aditivas existentes, hay una familia (desde el ...
    • Connect the dot: computing feed-links for network extension 

      Speckmann, Bettina; Silveira, Rodrigo Ignacio; Aronov, Boris; Buchin, Kevin; Buchin, Maike; Jansen, Bart; De Jong, Tom; Kreveld, Marc van; Loffler, Maarten; Luo, Jun (2011-12-20)
      Article
      Open Access
      Road network analysis can require distance from points that are not on the network themselves. We study the algorithmic problem of connecting a point inside a face (region) of the road network to its boundary while ...
    • Definition of Virtual Reality simulation models using Specification and Description Language Diagrams 

      Fonseca Casas, Pau; Pi Palomés, Xavier; Casanovas Garcia, Josep; Jové, Jordi (Springer, 2013)
      Conference report
      Open Access
      A full representation of a simulation model encompasses the behavior of the elements that define the model, the definition of the probability distributions that define the delays of the events that control the model, ...
    • Firmas digitales con verificación distribuida en el modelo de seguridad estándar 

      Herranz Sotoca, Javier; Ruiz Rodríguez, Alexandre; Sáez Moreno, Germán (2012)
      Conference report
      Open Access
      Las firmas digitales con verificaci´on distribuida protegen en cierta manera el nivel de anonimato o privacidad del firmante, ya que un subconjunto autorizado de usuarios deben colaboran para verificar la (in)validez ...
    • Flow computations on imprecise terrains 

      Driemel, Anne; Haverkort, Herman; Löffler, Maarten; Silveira, Rodrigo Ignacio (Springer Verlag, 2011)
      Conference report
      Restricted access - confidentiality agreement
      We study water flow computation on imprecise terrains. We consider two approaches to modeling flow on a terrain: one where water flows across the surface of a polyhedral terrain in the direction of steepest descent, and ...
    • Formal and operational validation of a bus stop public transport network micro simulation 

      Fonseca Casas, Pau; Codina Sancho, Esteve; Montero Mercadé, Lídia; Linares Herreros, María Paz; Montañola Sales, Cristina (2014)
      Conference report
      Open Access
      We present a detailed simulation model with the purpose of analyzing the congestion and interaction between bus lines and passengers at stops. Our main goal is to perform a complete validation of a simulation model formalized ...
    • Introducing semantic variables in mixed distance measures: Impact on hierarchical clustering 

      Gibert, Karina; Valls Mateu, Aïda; Batet Sanromà, Montserrat (2014-09-01)
      Article
      Restricted access - publisher's policy
      Today, it is well known that taking into account the semantic information available for categorical variables sensibly improves the meaningfulness of the final results of any analysis. The paper presents a generalization ...
    • Iterative beam search for simple assembly line balancing with a fixed number of work stations 

      Blum, Christian (Institut d'Estadística de Catalunya, 2011)
      Article
      Open Access
      The simple assembly line balancing problem (SALBP) concern s the assignment of tasks with pre-defined processing times to work stations that are arran ged in a line. Hereby, precedence constraints between the tasks ...
    • Metodologia del modelo de asignación en el estudio de trafico de vigo 

      Codina Sancho, Esteve; Montero Mercadé, Lídia; Santos López, M. Antonia de los (LOPEZ PITA Y ROBUSTE ANTON EDITORES, 1998)
      Conference report
      Open Access
      El modelo de transporte privado desarrollado para la ciudad de Vigo persigue una mejora de las condiciones de circulación. El estudio desarrolla diversos tipos e alternativas. Un primer grupo de alternativas aborda ...
    • MFACT, a new funcionality in MFA -FactoMineR 

      Kostov, Belchin Adriyanov; Bécue Bertaut, Mónica María; Husson, François (2013)
      Article
      Restricted access - publisher's policy
      We present multiple factor analysis for contingency tables (MFACT) and its implementation in the FactoMineR package. This method, through an option of the MFA function, allows us to deal with multiple contingency or ...
    • NZEB. Optimización mediante co-simulación. Estudio de caso (e)Co, prototipo del concurso Solar Decathlon 2012 

      Fonseca Casas, Pau (2012)
      Conference lecture
      Open Access
      Actualmente, en los estudios de arquitectura, hay una necesidad de integrar diferentes disciplinas y técnicos especializados en el grupo de trabajo; donde se hace imprescindible el uso de simuladores y software CAD ...
    • Optimal sizing of microgrids: a fast charging station case 

      Corchero García, Cristina; Cruz Zambrano, Miguel; Heredia, F.-Javier (Francisco Javier); Cairó Molins, Josep Ignasi; Igualada González, Lucía; Romero Ortega, Aitor (2012)
      Conference report
      Restricted access - publisher's policy
      In this work we focus on the optimal design of electric vehicle charging stations. We consider investment, operational costs, physical constraints and different electricity pricing strategies. The size of the various ...